Burner and nozzle characteristics tables
1 Natural Gas G20 AUX SR R UR2 int + ext
Rated heating capacity (kW)
1.0 1.8 2.9 4.2
Nozzle diameter (1/100 mm)
72 97 115 75 + 135
Pre-chamber (printed on nozzle)
(X) (Z) (Y) (H1) + (H3)
Reduced flow rate (W)
400 500 800 1900
2 Natural Gas G20 AUX SR R UR2 int + ext
Rated heating capacity (kW)
1.1 1.8 2.9 4.2
Nozzle diameter (1/100 mm)
72 94 115 75 + 125
Pre-chamber (printed on nozzle)
(X) (Y) (8) (H1) + (H3)
Reduced flow rate (W)
400 500 800 1900
3 Natural gas G25 – G25.3 AUX SR R UR2 int + ext
Rated heating capacity (kW)
1.0 1.8 3.0 4.2
Nozzle diameter (1/100 mm)
72 94 121 75 + 145
Pre-chamber (printed on nozzle)
(F1) (Y) (F2) (H1) + (H3)
Reduced flow rate (W)
400 500 800 1900
4 Natural Gas G25.1 AUX SR R UR2 int + ext
Rated heating capacity (kW)
1.1 1.8 3.0 4.1
Nozzle diameter (1/100 mm)
77 100 134 75 + 138
Pre-chamber (printed on nozzle)
(F1) (Y) (F3) (H1) + (F3)
Reduced flow rate (W)
400 500 800 1900
6 Natural Gas G27 AUX SR R UR2 int + ext
Rated heating capacity (kW)
1.0 1.8 2.9 4.1
Nozzle diameter (1/100 mm)
77 105 138 80 + 148
Pre-chamber (printed on nozzle)
(F1) (Y) (F3) (H1) + (F3)
Reduced flow rate (W)
400 500 800 1900
7 Natural Gas G2.350 AUX SR R UR2 int + ext
Rated heating capacity (kW)
1.0 1.8 2.9 4.1
Nozzle diameter (1/100 mm)
94 120 165 100 + 190
Pre-chamber (printed on nozzle)
(Y) (Y) (F3) (0) + (H3)
Reduced flow rate (W)
400 500 800 1900